/Engine/Source/Runtime/SlateCore/Public/Layout/Geometry.h
Create a paint geometry relative to this one that whose local space is "inflated" by the specified amount in each direction. The paint geometry inherits the widget's render transform.
The new paint geometry derived from this one.
[FPaintGeometry](API\Runtime\SlateCore\Layout\FPaintGeometry) ToInflatedPaintGeometry ( const [UE::Slate::FDeprecateVector2DParameter](API\Runtime\SlateCore\Types\FDeprecateVector2DParameter) & InflateAmount ) const